Question

The marks (out of 10) obtained by 28 students in a Mathematics test are listed as below: 8,1, 2, 6, 5, 5, 5,0,1, 9, 7, 8, 0, 5, 8, 3, 0, 8, 10, 10, 3, 4, 8, 7, 8, 9, 2, 0 find The number of students who obtained marks more than or equal to 5, is

(a) 13

(b) 15

(c) 16

(d) 17​

Answer 1

Option (d) is correct.

Explanation of the AnswEr :

Arranging the given marks which are obtained by 28 students in a mathematics test in ascending order. Therefore,

• 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 10, 10.

Counting the number of students who obtained marks more than 5 or equal to 5.

• 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 10, 10.

After counting the given data, the number of students who obtained marks more than 5 or equal to 5 are 17.

•°• Correct option is option (d).

⠀⠀⠀⠀⠀⠀━━━━━━━━━━━━━━━━━━━⠀⠀⠀⠀⠀⠀⠀⠀

Answer 2

Answer:

Given :-

Marks obtained by 28 students

8,1, 2, 6, 5, 5, 5,0,1, 9, 7, 8, 0, 5, 8, 3, 0, 8, 10, 10, 3, 4, 8, 7, 8, 9, 2, 0

To Find :-

Numbers of students who scored more than or equal to 5

Solution :-

First of all let's represent them as tally mark

5 - ||||(4)

6 - |(1)

7 - ||(2)

8 - |||||| (6)

9 - ||(2)

10 - ||(2)

=> 4 + 1 + 2 + 6 + 2 + 2

=> 5 + 2 + 6 + 2 + 2

=> 7 + 6 + 2 + 2

=> 13 + 2 + 2

=> 15 + 2

=>17